Pirate to-do list:
1. Remember to get parrot and AK-47, and other "effects"
2. Make sure that ship you attack at night is not extremely heavily armed US warship
They forgot #2, it appears.
Here is what USS Nicholas was packin':
One OTO Melara Mk 75 76 mm naval gun
two Mk 32 triple-tube (324 mm) launchers for Mark 46 torpedoes
one Vulcan Phalanx CIWS
four .50-cal (12.7 mm) machine guns.
SM-1MR Standard anti-ship/air missiles (40 round magazine)
What is a Phalanx? It's a 20mm Gatling gun, which fires 4,000 high explosive/incendiary rounds per minute. That is putting quite a bit of lead downrange in a hurry.
Furthermore, the main gun, the Melara Mk 76 mm, gun....it can fire more than 80 rounds per minute, with each shell carrying 15 pounds of high explosive. (Yes, 80 rounds per minute, and that's limited only by the loading device. The rate of fire on the gun is actually more than 100 rounds per minute. So a three second burst is 5 or 6 massive shells.)